package com.mogu.biguser.common.util;

import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;

import java.io.*;
import java.net.MalformedURLException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class FtpUtils {
    //ftp服务器地址
    // private static String hostname = "127.0.0.1";//注意:部署到服务器上的地址是127.0.0.1,不然上传不了
    private static String hostname = "115.231.254.38";//注意:部署到服务器上的地址是127.0.0.1,不然上传不了

    //因为ftp部署在那台服务器上的,所以地址设置的是127.0.0.1如果部署在其他服务器上可直接用ip
    //ftp服务器端口号默认为21
    private static Integer port = 21 ;
    //ftp登录账号
    private static String username = "admin";
    //ftp登录密码
    private static String password = "admin123";

    private static FTPClient ftpClient = null;

    /**
     * 初始化ftp服务器
     */
    public static void initFtpClient() {
        ftpClient = new FTPClient();
        ftpClient.setControlEncoding("utf-8");
        try {
            System.err.println("connecting...ftp服务器:"+FtpUtils.hostname+":"+FtpUtils.port);
            ftpClient.connect(hostname, port); //连接ftp服务器
            ftpClient.enterLocalPassiveMode();
            ftpClient.login(username, password); //登录ftp服务器
            int replyCode = ftpClient.getReplyCode(); //是否成功登录服务器
            if(!FTPReply.isPositiveCompletion(replyCode)){
                System.err.println("connect failed...ftp服务器:"+FtpUtils.hostname+":"+FtpUtils.port);
            }
            System.err.println("connect successfu...ftp服务器:"+FtpUtils.hostname+":"+FtpUtils.port);
        }catch (MalformedURLException e) {
            e.printStackTrace();
        }catch (IOException e) {
            e.printStackTrace();
        }
    }

    /**
     * 上传文件
     * @param pathname ftp服务保存地址
     * @param fileName 上传到ftp的文件名
     *  @param originfilename 待上传文件的名称（绝对地址） *
     * @return
     */
    public static boolean uploadFile( String pathname, String fileName,String originfilename){
        boolean flag = false;
        InputStream inputStream = null;
        try{
            System.err.println("开始上传文件");
            inputStream = new FileInputStream(new File(originfilename));
            initFtpClient();
            ftpClient.setFileType(ftpClient.BINARY_FILE_TYPE);
            CreateDirecroty(pathname);
            ftpClient.makeDirectory(pathname);
            ftpClient.changeWorkingDirectory(pathname);
            ftpClient.storeFile(fileName, inputStream);
            inputStream.close();
            ftpClient.logout();
            flag = true;
            System.err.println("上传文件成功");
        }catch (Exception e) {
            System.err.println("上传文件失败");
            e.printStackTrace();
        }finally{
            if(ftpClient.isConnected()){
                try{
                    ftpClient.disconnect();
                }catch(IOException e){
                    e.printStackTrace();
                }
            }
            if(null != inputStream){
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return true;
    }
    /**
     * 上传文件
     * @param pathname ftp服务保存地址
     * @param fileName 上传到ftp的文件名
     * @param inputStream 输入文件流
     * @return
     */
    public static boolean uploadFile( String pathname, String fileName,InputStream inputStream){
        boolean flag = false;
        try{
            System.err.println("开始上传文件");
            initFtpClient();
            ftpClient.setFileType(ftpClient.BINARY_FILE_TYPE);
            CreateDirecroty(pathname);
            ftpClient.makeDirectory(pathname);
            ftpClient.changeWorkingDirectory(pathname);
            ftpClient.storeFile(fileName, inputStream);
            inputStream.close();
            ftpClient.logout();
            flag = true;
            System.err.println("上传文件成功");
        }catch (Exception e) {
            System.err.println("上传文件失败");
            e.printStackTrace();
        }finally{
            if(ftpClient.isConnected()){
                try{
                    ftpClient.disconnect();
                }catch(IOException e){
                    e.printStackTrace();
                }
            }
            if(null != inputStream){
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return true;
    }
    //改变目录路径
    public static boolean changeWorkingDirectory(String directory) {
        boolean flag = true;
        try {
            flag = ftpClient.changeWorkingDirectory(directory);
            if (flag) {
                System.err.println("进入文件夹" + directory + " 成功！");

            } else {
                System.err.println("进入文件夹" + directory + " 失败！开始创建文件夹");
            }
        } catch (IOException ioe) {
            ioe.printStackTrace();
        }
        return flag;
    }

    //创建多层目录文件，如果有ftp服务器已存在该文件，则不创建，如果无，则创建
    public static boolean CreateDirecroty(String remote) throws IOException {
        boolean success = true;
        String directory = remote + "/";
        // 如果远程目录不存在，则递归创建远程服务器目录
        if (!directory.equalsIgnoreCase("/") && !changeWorkingDirectory(new String(directory))) {
            int start = 0;
            int end = 0;
            if (directory.startsWith("/")) {
                start = 1;
            } else {
                start = 0;
            }
            end = directory.indexOf("/", start);
            String path = "";
            String paths = "";
            while (true) {
                String subDirectory = new String(remote.substring(start, end).getBytes("GBK"), "iso-8859-1");
                path = path + "/" + subDirectory;
                if (!existFile(path)) {
                    if (makeDirectory(subDirectory)) {
                        changeWorkingDirectory(subDirectory);
                    } else {
                        System.err.println("创建目录[" + subDirectory + "]失败");
                        changeWorkingDirectory(subDirectory);
                    }
                } else {
                    changeWorkingDirectory(subDirectory);
                }

                paths = paths + "/" + subDirectory;
                start = end + 1;
                end = directory.indexOf("/", start);
                // 检查所有目录是否创建完毕
                if (end <= start) {
                    break;
                }
            }
        }
        return success;
    }

    //判断ftp服务器文件是否存在
    public static boolean existFile(String path) throws IOException {
        boolean flag = false;
        FTPFile[] ftpFileArr = ftpClient.listFiles(path);
        if (ftpFileArr.length > 0) {
            flag = true;
        }
        return flag;
    }
    //创建目录
    public static boolean makeDirectory(String dir) {
        boolean flag = true;
        try {
            flag = ftpClient.makeDirectory(dir);
            if (flag) {
                System.err.println("创建文件夹" + dir + " 成功！");

            } else {
                System.err.println("创建文件夹" + dir + " 失败！");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return flag;
    }

    /** * 下载文件 *
     * @param pathname FTP服务器文件目录 *
     * @param filename 文件名称 *
     * @param localpath 下载后的文件路径 *
     * @return */
    public static   boolean downloadFile(String pathname, String filename, String localpath){
        boolean flag = false;
        OutputStream os=null;
        try {
            System.err.println("开始下载文件");
            initFtpClient();
            //切换FTP目录
            ftpClient.changeWorkingDirectory(pathname);
            FTPFile[] ftpFiles = ftpClient.listFiles();
            for(FTPFile file : ftpFiles){
                if(filename.equalsIgnoreCase(file.getName())){
                    File localFile = new File(localpath + "/" + file.getName());
                    os = new FileOutputStream(localFile);
                    ftpClient.retrieveFile(file.getName(), os);
                    os.close();
                }
            }
            ftpClient.logout();
            flag = true;
            System.err.println("下载文件成功");
        } catch (Exception e) {
            System.err.println("下载文件失败");
            e.printStackTrace();
        } finally{
            if(ftpClient.isConnected()){
                try{
                    ftpClient.disconnect();
                }catch(IOException e){
                    e.printStackTrace();
                }
            }
            if(null != os){
                try {
                    os.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return flag;
    }

    /** * 删除文件 *
     * @param pathname FTP服务器保存目录 *
     * @param filename 要删除的文件名称 *
     * @return */
    public static boolean deleteFile(String pathname, String filename){
        boolean flag = false;
        try {
            System.err.println("开始删除文件");
            initFtpClient();
            //切换FTP目录
            ftpClient.changeWorkingDirectory(pathname);
            ftpClient.dele(filename);
            ftpClient.logout();
            flag = true;
            System.err.println("删除文件成功");
        } catch (Exception e) {
            System.err.println("删除文件失败");
            e.printStackTrace();
        } finally {
            if(ftpClient.isConnected()){
                try{
                    ftpClient.disconnect();
                }catch(IOException e){
                    e.printStackTrace();
                }
            }
        }
        return flag;
    }
    /**
     * Description: 从FTP服务器下载文件
     * @param host FTP服务器hostname
     * @param port FTP服务器端口
     * @param username FTP登录账号
     * @param password FTP登录密码
     * @param remotePath FTP服务器上的相对路径
     * @param fileName 要下载的文件名
     * @param localPath 下载后保存到本地的路径
     * @return
     */
    public static boolean downloadFileNow(  String remotePath,
                                       String fileName, String localPath) {
        boolean result = false;

        FTPClient ftp = new FTPClient();
        try {
            int reply;
            ftp.connect(hostname, port);
            ftp.enterLocalPassiveMode();
            // 如果采用默认端口，可以使用ftp.connect(host)的方式直接连接FTP服务器
            ftp.login(username, password);// 登录
            reply = ftp.getReplyCode();
            if (!FTPReply.isPositiveCompletion(reply)) {
                ftp.disconnect();
                return result;
            }
            ftp.changeWorkingDirectory(remotePath);// 转移到FTP服务器目录
            FTPFile[] fs = ftp.listFiles();
            for (FTPFile ff : fs) {
                if (ff.getName().equals(fileName)) {
                    File localFile = new File(localPath + "/" + ff.getName());

                    OutputStream is = new FileOutputStream(localFile);
                    ftp.retrieveFile(ff.getName(), is);
                    is.close();
                }
            }

            ftp.logout();
            result = true;
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (ftp.isConnected()) {
                try {
                    ftp.disconnect();
                } catch (IOException ioe) {
                }
            }
        }
        return result;
    }

    public static String getFileName(String url){
        String suffixes="avi|mpeg|3gp|mp3|mp4|wav|jpeg|gif|jpg|png|apk|exe|pdf|rar|zip|docx|doc";
        Pattern pat=Pattern.compile("[\\w]+[\\.]("+suffixes+")");//正则判断
        Matcher mc=pat.matcher(url);//条件匹配
        while(mc.find()){
            String substring = mc.group();//截取文件名后缀名
            return substring;
        }
        return null;
    }

    public static void main(String[] args) {
     //   FtpUtils.uploadFile("ftpFile/data", "mm.jpg", "E://mm.jpg");
        //ftp.downloadFile("ftpFile/data", "123.docx", "F://");
        //ftp.deleteFile("ftpFile/data", "123.docx")
        // FtpUtils
        //
         String url=  "http://115.231.254.38:9090/mogo/swxt/1539846463306.doc";

      String remote="/mogo/swxt/";
      String flieName=  getFileName(url);
        FtpUtils.downloadFileNow( remote,flieName,"D://");
        System.err.println("ok");
    }
}